std::pow

 

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Fonctions Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Opérations de base Original: Basic operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
abs(int) labs llabs imaxabs (C++11) abs(float) fabs div ldiv lldiv imaxdiv (C++11) fmod	remainder (C++11) remquo (C++11) fma (C++11) fmax (C++11) fmin (C++11) fdim (C++11) nan nanf nanl (C++11) (C++11) (C++11)
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exp exp2 (C++11) expm1 (C++11)	log log10 log1p (C++11) log2 (C++11)
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sqrt cbrt (C++11)	hypot (C++11) pow
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sin cos tan asin acos atan atan2	sinh cosh tanh asinh (C++11) acosh (C++11) atanh (C++11)

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Macro constantes Original: Macro constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
HUGE_VALF HUGE_VAL HUGE_VALL (C++11) (C++11) INFINITY (C++11) NAN (C++11) math_errhandling MATH_ERRNO MATH_ERREXCEPT (C++11)	FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C++11) (C++11) (C++11) (C++11) (C++11)

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Defined in header <cmath>
float       pow( float base, float exp );	(1)
double      pow( double base, double exp );	(2)
long double pow( long double base, long double exp );	(3)
Promoted    pow( Arithmetic base, Arithmetic exp );	(4)	(depuis C++11)
float       pow( float base, int iexp );	(5)	(avant C++11)
double      pow( double base, int iexp );	(6)	(avant C++11)
long double pow( long double base, int iexp );	(7)	(avant C++11)

Calcule la valeur de base élevé à la puissance exp ou iexp .

Original:

Computes the value of base raised to the power exp or iexp.

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4)

Un ensemble de surcharges ou d'un modèle de fonction de toutes les combinaisons des arguments de type arithmétique ne sont pas couverts par 1-3). Si un argument est de type intégral, il est jeté à double. Si aucun argument n'est long double, le Promoted type de retour est également long double, sinon le type de retour est toujours double .

Original:

A set of overloads or a function template for all combinations of arguments of arithmetic type not covered by 1-3). If any argument has integral type, it is cast to double. If any argument is long double, then the return type Promoted is also long double, otherwise the return type is always double.

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Paramètres

base	-	de base comme valeur à virgule flottante Original: base as floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
exp	-	exposant comme valeur à virgule flottante Original: exponent as floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iexp	-	exposant comme valeur entière Original: exponent as integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Retourne la valeur

base soulevé par le pouvoir (ou exp iexp) .

Original:

base raised by power (exp or iexp).

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Erreur de domaine se produit si base est 0 et exp est inférieure ou égale à ​0​. NAN est retourné dans ce cas .

Original:

Domain error occurs if base is 0 and exp is less than or equal to ​0​. NAN is returned in that case.

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Erreur de domaine se produit si base est négatif et exp n'est pas une valeur entière. NAN est retourné dans ce cas .

Original:

Domain error occurs if base is negative and exp is not an integer value. NAN is returned in that case.

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Erreur d'intervalle se produit si un débordement se produit. HUGEVAL est retourné dans ce cas .

Original:

Range error occurs if an overflow takes place. HUGEVAL is returned in that case.

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Notes

pow(float, int) retours float jusqu'à ce que C + +11 (surcharge par 5) mais revient double puisque le C + +11 (surcharge par 4)

Original:

pow(float, int) returns float until C++11 (per overload 5) but returns double since C++11 (per overload 4)

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Voir aussi

exp	retours e à la puissance donnée (ex) Original: returns e raised to the given power (ex) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
log	calcule naturel (base e) logarithme (de base e) (ln(x)) Original: computes natural (base e) logarithm (to base e) (ln(x)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
sqrt	calcule la racine carrée (√x) Original: computes square root (√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
cbrt (C++11)	calcule la racine cubique (3√x) Original: computes cubic root (3√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
pow(std::complex)	puissance complexe, une ou deux arguments peut être un nombre complexe Original: complex power, one or both arguments may be a complex number The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique)
pow(std::valarray)	applique la fonction à deux std::pow valarrays ou un valarray et une valeur Original: applies the function std::pow to two valarrays or a valarray and a value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction générique)